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As a result, ten-digit dialing became required for all calls in the Houston area. On May 9, 2013, the Public Utility Commission of Texas (PUC) announced the addition of yet another code, 346, to the Houston overlay as of July 1, 2014. [1] This had the effect of allocating over 31 million telephone numbers to a service territory of eight million ...
Numbering plan areas and area codes of Texas (tan). This is a list of area codes in the U.S. state of Texas. The date of establishment of each area code is indicated in parentheses: [1] 210: San Antonio area; overlays with 726 (November 1, 1992) 214: Dallas area, overlays with 469, 972, and 945 (October 1947)
There is also a new, 346 area code. Areas far north, west, east and south of the inner-city also use 936 and 409. Zip codes in Houston range from 77002 to 77099. A small portion of northeast Houston uses zip codes 77339 and 77345. Houston is the most populated city in the United States without zoning laws. City voters rejected creation of ...
The map to the right is now clickable; click on an area code to go to the page for that code, or use the text links below. Map of texas in blue showing area codes, with border codes Pages in category "Area codes in Texas"
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
Greater Houston, Texas: 289, 365: 905: Golden Horseshoe region of Ontario, including suburban Toronto, Hamilton, Oshawa, and the Niagara Peninsula in Ontario: 321: 407: Central Florida: In addition to being the sole area code in the Space Coast region around the Kennedy Space Center, this is the only partial overlay area code in North America ...
Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
The land surface in and around the city of Houston is composed of alternating layers of red, gray, sandy brown, and black organic clay; these strata generally dip to the southeast at a slope of 0.06% (3 feet (0.91 m) of vertical change for every 1 mile (1.6 km) of distance traveled). [6]